172404241 has 2 divisors, whose sum is σ = 172404242. Its totient is φ = 172404240.

The previous prime is 172404229. The next prime is 172404263. The reversal of 172404241 is 142404271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170433025 + 1971216 = 13055^2 + 1404^2 .

It is an emirp because it is prime and its reverse (142404271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172404241 - 2⁵ = 172404209 is a prime.

It is not a weakly prime, because it can be changed into another prime (172404041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86202120 + 86202121.

It is an arithmetic number, because the mean of its divisors is an integer number (86202121).

Almost surely, 2^172404241 is an apocalyptic number.

It is an amenable number.

172404241 is a deficient number, since it is larger than the sum of its proper divisors (1).

172404241 is an equidigital number, since it uses as much as digits as its factorization.

172404241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 172404241 is about 13130.2795476715. The cubic root of 172404241 is about 556.5651149608.

The spelling of 172404241 in words is "one hundred seventy-two million, four hundred four thousand, two hundred forty-one".